Home / 7,280.17-10,911.12-3,115.28

Finding the Fourth Proportional to 7,280.17, 10,911.12 and 3,115.28

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Solution

The fourth proportional to 7,280.17, 10,911.12 and 3,115.28 is: 4,669.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280.17 : 10,911.12 = 3,115.28 : x
  2. Step 2: Convert to fraction form
    7,280.17/10,911.12 = 3,115.28/x
  3. Step 3: Cross multiply
    7,280.17x = 10,911.12 × 3,115.28
  4. Step 4: Simplify right side
    7,280.17x = 33,991,193.91
  5. Step 5: Solve for x
    x = 33,991,193.91/7,280.17
  6. Step 6: Final answer
    x = 4,669.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.